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    <title>Document</title>
    <script>
        //利用函数封装的方式，翻转任意一个数组
        function reverse(arr) {
            var newArr = [];
        for(var i = arr.length-1;i>=0;i--){
            newArr[newArr.length]=arr[i];
        }
        return newArr;
    }
    var arr1 =reverse([8,6,9,2,1]);
    console.log(arr1);
    var arr2 =reverse(['red','pink','blue']);
    console.log(arr2);
    </script>
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<body>
    
</body>
</html>